The virus is primarily transmitted from sick to healthy people by blood or body fluids (including but not limited to urine, saliva, sweat, feces, vomit, breast milk, and semen). ... There is a complex biological process between the mosquito and the pathogen that must be completed before transmission can occur. read more
This Week in Virology has recently covered Ebola virus in two recent podcasts, in great detail. In the podcasts, they discuss the transmission of ebola (specifically how it is only contact transmitted). Additionally, they discuss how there is no recorded human virus where the virus completely changes its transmission mode via mutation. read more